eBook Reader
The iPad could be perfect for educational text books. Project Gutenberg

Web Research
Apart from no Flash video, browsing should be as good as a laptop yet more personal and flexible. Roveror Cloud Browse

Presenting
Great for handheld presenting to a small group of peers. With the iPad 2, presenting via VGA/HDMI is now possible and with Apple TV this can be done wirelessly.

Blogging
Great for learners to add to a group or class blog using apps like Wordpress, Blogmeister, etc.
Publishing
The iBook store could be awesome if schools can contribute their own work. All you need is a PDF format.Can also use Pages & iBooks Author on the Mac

Art Work
Already some great apps for drawing & painting for all ages. Doodle Buddy, Scribble Press

Note-taking
Easy portable method for learners to make notes and mind-maps of class and lecture information. Evernote is free.

Comic-making
Free apps already out there for simple story creation and visual literacy. Story Kit, Story Lines, Scribble Press

Digital StorytellingWith built-in still and video cameras plus a decent microphone, the iPad is ideal for simple digital storytelling. Story Kit, Story Lines, Scribble Press
Creativity
So many apps offer opportunities for learners to create and develop original ideas and stories.
Music
There is an increasing number of musical apps coming along which encourage learners to create music in new and innovative ways.

Video Editing
iMovie uses the built-in cameras to take footage and do some basic video editing.